diff --git a/src/emu/cpu/mips/mips3.c b/src/emu/cpu/mips/mips3.c
index fed4a116752..ce8466b2b21 100644
--- a/src/emu/cpu/mips/mips3.c
+++ b/src/emu/cpu/mips/mips3.c
@@ -191,8 +191,6 @@ mips3_device::mips3_device(const machine_config &mconfig, device_type type, cons
 	}
 	memset(m_fastram, 0, sizeof(m_fastram));
 	memset(m_hotspot, 0, sizeof(m_hotspot));
-
-	m_isdrc = (mconfig.options().drc() && !mconfig.m_force_no_drc) ? true : false;
 }
 
 
@@ -323,6 +321,8 @@ void mips3_device::check_irqs()
 
 void mips3_device::device_start()
 {
+	m_isdrc = (mconfig().options().drc() && !mconfig().m_force_no_drc) ? true : false;
+
 	/* allocate the implementation-specific state from the full cache */
 	m_core = (internal_mips3_state *)m_cache.alloc_near(sizeof(internal_mips3_state));
 
diff --git a/src/emu/cpu/rsp/rsp.c b/src/emu/cpu/rsp/rsp.c
index ed26eb66603..1e2922bf69f 100644
--- a/src/emu/cpu/rsp/rsp.c
+++ b/src/emu/cpu/rsp/rsp.c
@@ -139,7 +139,6 @@ rsp_device::rsp_device(const machine_config &mconfig, const char *tag, device_t
 	, m_sp_reg_w_func(*this)
 	, m_sp_set_status_func(*this)
 {
-	m_isdrc = (mconfig.options().drc() && !mconfig.m_force_no_drc) ? true : false;
 }
 
 offs_t rsp_device::disasm_disassemble(char *buffer, offs_t pc, const UINT8 *oprom, const UINT8 *opram, UINT32 options)
@@ -362,6 +361,7 @@ void rsp_device::resolve_cb()
 
 void rsp_device::device_start()
 {
+	m_isdrc = (mconfig().options().drc() && !mconfig().m_force_no_drc) ? true : false;
 	m_rsp_state = (internal_rsp_state *)m_cache.alloc_near(sizeof(internal_rsp_state));
 
 	if (LOG_INSTRUCTION_EXECUTION)
diff --git a/src/emu/cpu/sh2/sh2.c b/src/emu/cpu/sh2/sh2.c
index a60b8215a26..4a2662d12d8 100644
--- a/src/emu/cpu/sh2/sh2.c
+++ b/src/emu/cpu/sh2/sh2.c
@@ -208,7 +208,7 @@ sh2_device::sh2_device(const machine_config &mconfig, device_type type, const ch
 	, m_nocode(NULL)
 	, m_out_of_cycles(NULL)
 {
-	m_isdrc = (mconfig.options().drc() && !mconfig.m_force_no_drc);
+	m_isdrc = (mconfig.options().drc() && !mconfig.m_force_no_drc) ? true : false;
 }
 
 sh1_device::sh1_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
diff --git a/src/mame/drivers/aleck64.c b/src/mame/drivers/aleck64.c
index 9cc7e4c5854..9dd7ef8d7c5 100644
--- a/src/mame/drivers/aleck64.c
+++ b/src/mame/drivers/aleck64.c
@@ -837,7 +837,6 @@ static MACHINE_CONFIG_START( aleck64, aleck64_state )
 
 	/* basic machine hardware */
 	MCFG_CPU_ADD("maincpu", VR4300BE, 93750000)
-	MCFG_FORCE_NO_DRC()
 	MCFG_MIPS3_ICACHE_SIZE(16384)
 	MCFG_MIPS3_DCACHE_SIZE(8192)
 	MCFG_MIPS3_SYSTEM_CLOCK(62500000)
@@ -851,7 +850,6 @@ static MACHINE_CONFIG_START( aleck64, aleck64_state )
 	MCFG_RSP_SP_SET_STATUS_CB(DEVWRITE32("rcp",n64_periphs, sp_set_status))
 	MCFG_CPU_PROGRAM_MAP(rsp_map)
 
-
 	MCFG_SCREEN_ADD("screen", RASTER)
 	MCFG_SCREEN_REFRESH_RATE(60)
 	MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
@@ -861,7 +859,6 @@ static MACHINE_CONFIG_START( aleck64, aleck64_state )
 
 	MCFG_PALETTE_ADD("palette", 0x1000)
 
-
 	MCFG_SPEAKER_STANDARD_STEREO("lspeaker", "rspeaker")
 
 	MCFG_SOUND_ADD("dac1", DMADAC, 0)
@@ -870,6 +867,8 @@ static MACHINE_CONFIG_START( aleck64, aleck64_state )
 	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "rspeaker", 1.0)
 
 	MCFG_N64_PERIPHS_ADD("rcp");
+
+	MCFG_FORCE_NO_DRC()
 MACHINE_CONFIG_END
 
 UINT32 aleck64_state::screen_update_e90(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
diff --git a/src/mess/drivers/n64.c b/src/mess/drivers/n64.c
index 6969d242e3f..503d80e839f 100644
--- a/src/mess/drivers/n64.c
+++ b/src/mess/drivers/n64.c
@@ -415,7 +415,6 @@ static MACHINE_CONFIG_START( n64, n64_mess_state )
 
 	MCFG_PALETTE_ADD("palette", 0x1000)
 
-
 	MCFG_SPEAKER_STANDARD_STEREO("lspeaker", "rspeaker")
 
 	MCFG_SOUND_ADD("dac2", DMADAC, 0)
@@ -433,6 +432,8 @@ static MACHINE_CONFIG_START( n64, n64_mess_state )
 
 	/* software lists */
 	MCFG_SOFTWARE_LIST_ADD("cart_list", "n64")
+
+	MCFG_FORCE_NO_DRC()
 MACHINE_CONFIG_END
 
 static MACHINE_CONFIG_DERIVED( n64dd, n64 )